Classic late 1930s Hohner Club Victoria in CF.  This has a third row of 7 buttons with accidentals and reversals.   All the reeds have been professionally re-valved, re-waxed and tuned in recent times.  The Club layout has been retained so that the button which would usually play C/D on the F row actually plays C/C, and the bass and chords that would usually have Bb/Bb actually have Eb/Bb. This could be changed if required by the buyer. The full note layout is shown here on melodoen.net.  Tuning is a light swing - less tremolo than you typically find on a Hohner.